Plant Physiology - Photosynthesis Questions and Answers

The light independent reaction of photosynthesis is also calle a the Calvin Cycle b cellular respiration c the Citric Acid Cycle d a photosystem

4 Mitochondria is to cellular respiration as a cytoplasm b stomata c chloroplast d stroma is to photosynthesi

Which of the following statements is false concerning photosynthesizers O They contain pigments O They obtain energy from the sun O They convert CO2 to glucose O Only eukaryotes can photosynthesize

During the light reactions of photosynthesis carbon dioxide is converted into glucose ATP is broken down into ADP and Pi ATP and NADPH are made from ADP, Pi and NADP+ glucose is broken down into pyruvate and carbon dioxide chemical energy is converted into green light

Beta subunit of ATP synthase is currently in its loose state. At what phase of ATP synthesis is it at? ATP is trapped within the subunit unable to escape ADP and inorganic phosphate react with each other ATP is released by the subunit ADP and inorganic phosphate are trapped within the subunit but do not react with each other

What was one positive effect of the Oil Embargo? A. Americans exponentially increased their energy use. B. Americans decided to never import oil. C. Americans chose to drive LESS energy efficient vehicles. D. Americans began to use energy more efficiently. 14

6CO2 + 6H₂O C6H12O6 + 602 Photosynthesis produces oxygen and glucose. Which of these products is needed by plants? Glucose Oxygen

In general, the citric acid cycle is ____________ when the cell needs lots of energy. avoided stimulated inhibited Ounaffected

Make me a cartoon/comic strip. use text and images to follow the path of a photon of light energy, and a molecule of carbon dioxide. Show me how they come together and are used in photosynthesis. Your comic should explain the journey of the photon and its role in linear electron flow. It should also explain what happens to the carbon dioxide molecule during the Calvin cycle.

plants encounter a problem when a. the environment becomes too cool and the stomata close to retain heat b. the temperature of the air rises above 28°C and the stomata open to air out the spaces in the leaves c. the temperature of the air rises above 28°C and the stomata close to conserve water, which prevents carbon dioxide from entering the air spaces in the leaf. d. the temperature of the air falls below 28°C, which causes chemical reactions to slow down e. the moisture in the air increases and too much water enters the leaf, preventing the oxygen from escaping

A savings account is used to save money for use at a later date. The account owner, deposits money in the account when they have money that is not needed immediately, and they can withdraw money for use a sometime in the future. If the flow of energy through photosynthesis and respiration were compared to maintaining a savings account, which would be accurate? Both photosynthesis and respiration are like making an energy deposit. Both photosynthesis and respiration are like making an energy withdrawal Photosynthesis is like making an energy deposit, and respiration is like making an energy withdrawal. Photosynthesis is like making an energy withdrawal, and respiration is like making an energy deposit.

A bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the organism into fresh media, infused with lots of carbon dioxide. Even after incubation at the correct temperature (of pond water), the organism is not growing. Your best explanation of what might have happened is Select one: a. there was no sulfur compound added to the medium, that could be used as an electron donor. b. no oxygen was added to the medium so the organism died. c. there is some inhibitory chemical that is preventing the growth of the bacterium. d. you were using the wrong type of sunlight as the energy source for the bacterium,

Which of the following statements regarding photosynthesis is CORRECT? Grasses such as corn and sugercane use CAM photosynthesis In photorespiration, the enzyme aldolase reacts with CO instead of 02 C4 plants divide the reactons of photosynthesis into 2 different cells C3 plants divide the reactions of photosynthesis between night and day C3 plants are adpated to thrive in the hot/dry climates of deserts

In both chlorophyll (a) and chlorophyll (b), the co-factor metal ions in the porphyrin rings are: 1. Iron (III) and Magnesium (II) 2. Iron (II) and Iron (III). 3. Magnesium (II) and Magnesium (II). 4. No metal ions are there in chlorophyll. 5. None of the above.

What is the purpose of photosynthesis? To oxidize glucose and transfer the stored chemical energy into ATP for the cells to To create ATP using energy from the sun to power the plant use To absorb energy from the sun and transfer the energy to electrons To capture energy from the sun and convert it into stored chemical energy in glucose.

Scientists were studying a new mutant version of sugarcane (a C4 plant) that has a non-functioning PEP carboxylase enzyme. Describe some problems that this plant might encounter on hot, sunny days. (4 C)

Follow the path of an electron from a molecule of water to the sugar G3P. water - PSII - ETC - PSI - NADPH - G3P water - PSII ETC PSI NADPH - ATP - G3P water - PSI - ETC - PSII - NADPH - G3P PSII - water - ETC - PSI - NADPH - G3P

What increases the amount of H+ (protons) in the thylakoid lumen? (select all that apply) sunlight splitting of water transport via the cytochrome complex production of ATP the influx of CO2

Which statement about the Calvin-Benson cycle is incorrect? Rubisco catalyzes the reaction between CO2 and RuBP For each turn of the Calvin-Benson cycle, only 2 molecules of G3P go on to make glucose 6 RuBP is reformed by 10 G3P molecules ATP and NADPH form when 3PG is reduced

In the chloroplast Light leads to the pumping of protons out of the thylakoid space into the stroma Light causes the stroma to become more acidic than the thylakoids ATP forms when protons are pumped into the thylakoid space Protons return passively down their [gradient) to the stroma via protein channels

What do thylakoid membrane and inner mitochondrial membrane have in common? photosystem II two choices are correct ATP synthase 3 proton pumps that move H* against their concentration gradient

Which 2 environmental variables may affect this floating leaf disk experiment? temperature of room; amount of bicarbonate in the syringes. amount of bicarbonate in the syringes; age of leaf temperature of room; amount of light in room age of leaf; amount of light in room

The negative control in the graph is the white light line showing the most activity the red and blue light lines showing chlorophyll a and b activity the green light line showing no chlorophyll a and b activity the no light line showing the critical component, light, is missing

In the 1660s, Flemish physician Jan van Helmont grew a small willow tree in a pot of soil. He added only water to the pot. At the end of five years, he found that the tree had gained 75 kilograms, but there was ver little change in the mass of the soil. Van Helmont concluded that the plant gained weight directly from the water. We now know that this conclusion is only partially correct because, in addition to water, photosynthes also requires (A) oxygen from the atmosphere (B) proteins from animal prey (C) carbon dioxide from the atmosphere (D) carbohydrates from the soil

You have recently been hired as the new Hydrology Professor at Elk Neck State College. You are the Lead Hydrologist. Your job is to create an informational flyer/poster/etcetera on the properties of water and their importance to present to the community. You need to have all of the properties with explanations, examples, and pics of each. Submit to Schoology when complete. You can use your online text and other resources as needed. Capillary action I Surface tension Cohesion Adhesion High heat of vaporization Polarity Density High Heat Capacity-resists temperature change

While screening the effects of various compounds on plant cells, you identify a molecule that severely reduces ATP production during photosynthesis, but has no effect on the reduction of NADP+ to NADPH. What is the most likely activity of this molecule in the chloroplast?

Explain why pheophytins are likely show up on chromatograms of frozen spinach, but rarely in a paper chromatogram of fresh spinach, while chlorophylls show up on paper chromatograms of both frozen and fresh spinach. Although "Pheophytins are present in frozen spinach and not in fresh spinach" is a correct statement, it does not answer the question and will not get any points. You may want to use chlorophyll a and pheophytin a as an example. Compare their structures, re- read the "Natural food coloring and spinach pigments" section in this handout and use this information to answer the question.

Which of the following will increase plant growth? carbon dioxide levels above normal below normal water levels depleted soll nutrients decreased light Intensity

Which process is most directly driven by light energy? creation of a pH gradientby pumping protons across the thylakoid membrane ATP synthesis transfer of energy from pigment molecule to pigment molecule reduction of NADP+ to NADPH

Consider the following facts: Rubisco can bind with both CO2 and 02. Rubisco will bind with oxygen if the oxygen concentration is too high. In C4 plants, rubisco is protected from high oxygen concentration caused by closed stomata by a layer of mesophyll cells. What happens to carbohydrate production in C3 plants if water is limited and stomata must close? Relate this to the fact that C3 plants are adapted to cooler temperatures than C4 plants.

Students are studying the process of photosynthesis in plants. Which of the following is a product of photosynthesis? A. carbon dioxide B. nitrogen C. sodium chloride D. sugar

Photosynthesis and cellular respiration are complementary, as the byproducts of one are the the other. of A. produced B. modified C. products D. reactants

How many net GTPs+ATPs are formed via the citric acid cycle from pyruvate that is produced from the glycolytic metabolism of one molecule of glucose?

The light reactions of photosynthesis take place in the A. intermembrane space. B. lumen of the cholorplast. C. thylakoid membrane. D. cytosol of mitochondria.

Which of the following structures found in autotrophs is the closest analog to mitochondria? A. ATP synthase B. Stroma C. Golgi Apparatus D. Chloroplasts

Noncyclic photophosphorylation only occurs in A. Photosystem I B. Photosystem II C. cholorphyll D. glycolysis

About 90% of all energy produced by the cell occurs through_____ A. Substrate phosphorylation B. Glycolysis C. Oxidative phosphorylation D. Reductive phosphorylation

If 10 W/m² impacts a surface and only 3 Wim² is reemitted back, what is the surface's albedo as a percent?

Which of the five pillars of Islam became a catalyst for change? A. Daily prayer B. Giving to the poor C. The pilgrimage to Mecca D. Submission to Allah

Light energy is mainly used to harvest electrons that are used to reduce [?] to NADPH for use in other reactions. NAD+ NADP NADP+

Many factors can influence the rate of photosynthesis as it is a(n) catalyzed reaction that has an optimal range. A. heavy metal B. channel protein C. ATP D. enzyme

Which ONE of the following is primarily responsible for the number of ATPs made per H+ that cross the inner mitochondrial membrane by ATP synthase? The F1 stator. The reversibility of ATP synthase. The ATP-ADP translocase. The number of c subunits.

Photosynthesis and cellular respiration are both_ catalyzed reactions. A.aquaporin B. protein C.carbon D. enzyme

6CO₂ + 6H₂O → C6H12O6 + 60₂ The equation above indicates that glucose and [?] are products of photosynthesis. A. CO2 B. C6H12O6 C. O2

The chemical reaction for photosynthesis is the reverse of the chemical reaction for cellular respiration. A. True B. False

Which structure is responsible for the initial physical movement of solar energy to chemical energy? antenna proteins reaction center light-harvesting complex chloroplasts

If water could not be split, photosynthesis would stop because A. water has a balancing effect in the plants chemistry that cannot be maintained without it B. the oxygen molecule in water is required for the dark reactions. C.water's "stolen" electron replace the one donated by the reaction center D.water is the original source of the donated electron in the electron transport chain

In the energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon

The function of mitochondria and chloroplasts is related to energy. In what way does their function differ? A. Mitochondria produce energy in prokaryotic cells, while chloroplasts produce energy in eukaryotic cells. B. Mitochondria produce energy from food, while chloroplasts produce food from the Sun's energy. C. In plants, mitochondria provide energy in non-green cells, while chloroplasts provide energy to cells in parts of the plant that are green. D. Mitochondria provide energy in the night, while chloroplasts provide energy in the day. E. Mitochondria provide energy from food synthesized by organelles other than chloroplasts, while chloroplasts provide energy through photosynthesis using the Sun's energy.

Sunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the nonvisible energy? A. It travels at a different speed through space. B. It travels a different distance through space. C. It has different wavelengths. D. It has different amplitudes.